Your boss has a bigger vocabulary than you have. That's one good reason why he's your boss.This discovery has been made in the word laboratories of the world. Not by theoretical English professors, but by practical, hard-headed(精明的) scholars who have been searching for the secrets of success.After a host of(许多) experiments and years of testing they have found out that if your vocabulary is limited your chances of success are limited and that one of the easiest and quickest ways to get ahead is by consciously building up your knowledge of words.Your words are your keys for your thoughts. And the more words you have at your command,the deeper, clearer and more accurate will be your thinking.A command of English will not only improve the processes of your mind. It will also give you assurance; build your self-confidence; lend colour to your personality; increase your popularity. Your vocabulary is you.If you consciously increase your vocabulary you will unconsciously raise yourself to a more important station in life, and the new and higher position you have won will,in turn, give you a better opportunity for further enriching your vocabulary. It is a beautiful and successful cycle.